Improvement in rotary steam-engines



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J OSE F.

DENAvARao, or NEW-YORK, N. Y., AssIGN'oR To lEMERv ROTARY MACHINEcoMPANroF sans PLACE.`

Lam Patent No@ 92,286, dated July 6, 1869.

IM'PROVEMENT IN ROTARY 'STEAM-NG-INES.

The Schedine referred todn these Letters Patent and making par: of thesame.

To all whom it mary concern :v-

Be it known thatl, Jos F. DE NAVARRO, of the city, county, and State ofN ew York, have invented aY being had tothe accompanying drawing,forming part of this specification, and in which- Figure l represents aside elevation of a rotary engine, constructed according to myimprovement, with the one side cover or lid removed', "and Figure 2 avertical section of the same through the line x x in fig. 1.

Similar letters of reference indicate corresponding parts. l Thisinvention 'relates to a rotary engine or motor form'ed of two cylinders,one within and eccentric to the other, in combination with slidingpistons, having a radial relationship to the innercylinder, and workingwithin and against the outer one.; said invention consisting in acombination, with said parts or devices, of one or more loose ringsarranged within the inner cylinder, vand clipped by the innerV ends orportions of the sliding pistons, which are thus connected in a free orloose manner to Work in unison with each other, and in close hutfreecontact with the outer cylinder.

Referring to the accompanying drawing- A represents the outer case orcylinder of the en-v dial slides or pistons.

gine, having sides 0r heads B B.

Within this cylinder A, buteccentric to it, is a cylinder, C, of adiameter to touch, or nearly so, in the course of its travel, one pointor line of the inner periphery of the outer cylinder A, and carrying anysnitahle number of sliding pistons, D, rwhich occupy a radial positionto said inner cylinder, and pass through slots or openings in thecylinder C; also are guided at their edges by grooves made in the sidesor'headsE E, to the inner cylinder C, and in or through rings orprojections a c therefrom.

F is the driving-shaft, which is here represented as divided or iliadeup oi' two sections fast to the heads E E of theinner cylinder G; but,if preferred, a single shaft ruiming entirely through the innercylinder, and

if necessary, throughboth heads to the outer` cylinder A, may he used,the peculiar-construction of the engine admitting of such dispositionofthe shaft.

G is the inlet, and H'the outlet orexhaust, in open communication withthe outer cylinder, as indicated by dotted lines b and c.

I is a looseyring arranged within the inner cylinder C, and clipped orheld in place in a ti'ee manner by the slides l), which are slotted attheir inner ends for the purpose, said slides bearing'or resting, as atd d in fig. 2, on the outer periphery ot'said ring, which is freeto'rotate inv concentric relationship to theouter cylinder, by thefriction ofthe slides on it, along with the slides and cylinder (l Inthis way the several slides are connected in a direct, positive, andsolid manner,l by the interposition ofthe ring'I, to move in close orsteam-tight contact with the outer cylinder,

and kept self-packing, while, by'reason of -said ring being ti'ee torotate along with the slides, wear or friction on it, or ot' thesurfaces ot' the slides bearing thereon, is avoided. f

By this arrangemenaall connecting links to or from the slides, withtheir wear and tear, as in a loose centre-pin construction of rotaryengines heretofore de- -vised or in use, are dispensed with. v

Steam, water, or any'other. 4suitable impelling-fluid may be used tooperate the engine; or in the case of it being used as a pump, the shaftEhe driven by any suitable means to rotate the'inner cylinder and itsraf of the outer cylinder and concentric therewith. This -I do notclaim; but

WhatfI do claim, and desire to secure by Letters Patent; is y Thearrangement of the loose ring I, operating in central slots d, in thepistons D, said pistons having a radial motion in grooves on the innersides ofthe. heads E F'of the eccentric revolving drum O, substantiallyas shown and described. n

Witnesses: J. F. DE NAVARRO.

FRED. HAYNES.

ARTHUR KINNIER.

